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NW of Lincoln, NE | Calculus is useless, yes.
Trigonometry is very useful.
Almost every time I set myself up for some building project I find a triangle or two I have to make. Often, I'll know the length from here to there and there to somewhere else, and I want to know the angle that I need to cut to make that angle work. Trig to the rescue!
(Take the swing set that I was building for my kids, for instance. The top beam was at 10 feet and the angled posts were 12 ((if I remember correctly.)) The Pythagorean Theorem and a little sine or cosine action and I had my angles and the bottom span.)
Edited by Beef State Ben 7/25/2015 08:59
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Algebra in farming
